Bogie for railway cars and the like



Aug. 24, 1926.

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N. A. PALMGREN Boem FOR RAILWAY CARS AND THE LIKE Filed Nov. 11 1925 2shets-sheet 2 INVENTOR WM5( M ATTORNEY Patented Aug. 24, 1926.

UNITED STATES PATENT OFFICE.

NILS ARVID PALllvIGREN, OF GOTI'ENBORG, SWEDEN, ASSIGNOR TO.AKTIEBOLAGET SVENSKA. KULLAGERFABRIKEN, OF GOTTENBORG, SWEDEN, ACORPORATION OF SWEDEN.

BOGIE FOR RAILWAY CARS AND THE LIKE.

Application filed November 11, 1925, Serial No. 68,259, and in SwedenNovember 17, 1924.

This invention relates to improvements in bogies `for railway cars andthe like.

The object of the invention is to prevent journal boxes containing asingle self-adjusting ball or roller bearing from tilting and thussecure a stable. position of the boxes. To this end, a rigid frame isattached, according to the invention, to all the boxes, at points belowtheir centres, the load being transmitted through the said frame to theboxes. This frame, suitably, consists of two beams, simple or compound,each below the boxes on one side, the said beams being connected throughrigid connections in order to prevent their turning on an axis parallelto the rail direction.k In order to allow the boxes to turn relativelyto the frame in a vertical plane parallel to the rail direction, thentraine is suitably provided, at

the points of suspension at the boxes, with pivots parallel to the wheelaxles.

In the drawings, a suspension device for the bogie frame of a railwaycar, arranged according to the invention, is shown by way of example. Fig. l is a side view of one haltl of a bogie. Fig. 2 is a plan View ofone fourth of the said bogie parts being in section.

In the embodiment shown, the bogie frame l bears through springs 3 on aframe consisting of longitudinal beams 4 connected by cross pieces 5.Each beam consists of two parallel bars having at their ends holes forpins 6 passing through corresponding holes in a downward projection 7from the 35 journal box 2.

I claim l. Improvements lin bogies for railway cars and the like,characterized by a box containing a single self-adjusting bearingmounted on each journal, and a rigid frame suspended on all the journalboxes, at points below their centres, for transmitting the load to theboxes, such frame at each side consisting of two longitudinal beamsbelow the. boxes, the said beams being connected together by rigidconnections in order to prevent their turning on an axis parallel to therail direction.

2. A device according to claim l, charac- 5o terized bythe frame beingprovided, at the points of suspension on the boxes, with pivots parallelto the wheel axles Vso as to allow the boxes to turn relatively to theframe in a Vertical plane parallel to the ra'l 55 direction.

In testimony whereof I have signed my name.

N ILSv ARVID PALMGREN.

